I had to replace ac compressor did a motor swap. I have the used oneto replace it, when I charge it do I have to add oil ?? The can doesnt really say it has oil in it. Do they all come with oil ? If not how much oil does it take.

 

Buy the oil separately in a non-pressurized bottle. I think it will need type PAG46. Do not use R134a with any additives except for UV dye (and only one can of this per car).

Take the compressor off the car and stand it on it's back end and rig a electric drill to a socket so you can spin the compressor on the bench (counterclockwise, the same way it turns on the car). Now spin the compressor and hold it at various angles to get the old oil out. Pour 4 oz of new oil into the compressor and put it back on the car. Always replace the receiver-drier as part of a job like this. Also it's very important to use a vacuum pump to clear the air out of the lines, don't just charge without pulling vacuum first.

 

Thanks for all the info, I didnt know all that you helped me out alot.

 

Should also point out a couple of other things.

After you have everything hooked up, before starting the engine to engage the A/C for the first time, turn the compressor by hand several revolutions to clear out any excess oil.

If all the parts are not from factory R134a systems (1994 or later model year), there are additonal concerns about the oil.

 

its from a 99 si and I will turn it by hand, Thanks again C-Melo